Mononitration
一硝基化
🗣️ 情景例句
Do I have to get it done by noon?
我必须在中午以前做完吗？
We have a lot of invitation cards, but they are all for the same date.
我们接到了许多请帖，但是上面的日期却全都是同一天。
He say he's just arrived in Scotland. He says he's staying at a Youth Hostel.You know he's a member of the Y.H.A.
他说他刚到苏格兰。他说他住在一家青年招待所。你知道，他是“青招协”的一个成员。